Tweaked README documentation formatting [skip ci]
[maven-release-plugin] prepare release solr-iso639-filter-4.4.0-r20130829
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release solr-iso639-filter-4.3.1-r20130829
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release solr-iso639-filter-4.3.0-r20130829
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release solr-iso639-filter-4.2.1-r20130829
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release solr-iso639-filter-4.2.0-r20130829
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release solr-iso639-filter-4.1.0-r20130829
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release solr-iso639-filter-4.0.0-r20130829
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release solr-iso639-filter-3.6.2-r20130829
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release solr-iso639-filter-3.6.1-r20130829
[maven-release-plugin] prepare for next development iteration
added links on the download page to the release artifacts